/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of other Qt classes.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#ifndef QAUDIOINPUTWIN_H
#define QAUDIOINPUTWIN_H

#include <QtCore/qt_windows.h>
#include <mmsystem.h>

#include <QtCore/qfile.h>
#include <QtCore/qdebug.h>
#include <QtCore/qtimer.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qmutex.h>

#include <qaudio.h>
#include <qaudiodeviceinfo.h>
#include <qaudiosystem.h>


QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


// For compat with 4.6
#if !defined(QT_WIN_CALLBACK)
#  if defined(Q_CC_MINGW)
#    define QT_WIN_CALLBACK CALLBACK __attribute__ ((force_align_arg_pointer))
#  else
#    define QT_WIN_CALLBACK CALLBACK
#  endif
#endif

class QAudioInputPrivate : public QAbstractAudioInput
{
    Q_OBJECT
public:
    QAudioInputPrivate(const QByteArray &device);
    ~QAudioInputPrivate();

    qint64 read(char* data, qint64 len);

    void setFormat(const QAudioFormat& fmt);
    QAudioFormat format() const;
    QIODevice* start();
    void start(QIODevice* device);
    void stop();
    void reset();
    void suspend();
    void resume();
    int bytesReady() const;
    int periodSize() const;
    void setBufferSize(int value);
    int bufferSize() const;
    void setNotifyInterval(int milliSeconds);
    int notifyInterval() const;
    qint64 processedUSecs() const;
    qint64 elapsedUSecs() const;
    QAudio::Error error() const;
    QAudio::State state() const;
    void setVolume(qreal volume);
    qreal volume() const;

    QIODevice* audioSource;
    QAudioFormat settings;
    QAudio::Error errorState;
    QAudio::State deviceState;

private:
    qint32 buffer_size;
    qint32 period_size;
    qint32 header;
    QByteArray m_device;
    int bytesAvailable;
    int intervalTime;
    QTime timeStamp;
    qint64 elapsedTimeOffset;
    QTime timeStampOpened;
    qint64 totalTimeValue;
    bool pullMode;
    bool resuming;
    WAVEFORMATEX wfx;
    HWAVEIN hWaveIn;
    MMRESULT result;
    WAVEHDR* waveBlocks;
    volatile bool finished;
    volatile int waveFreeBlockCount;
    int waveBlockOffset;

    QMutex mutex;
    static void QT_WIN_CALLBACK waveInProc( HWAVEIN hWaveIn, UINT uMsg,
            DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );

    WAVEHDR* allocateBlocks(int size, int count);
    void freeBlocks(WAVEHDR* blockArray);
    bool open();
    void close();

    void initMixer();
    void closeMixer();
    UINT mixerID;
    MIXERLINECONTROLS mixerLineControls;

private slots:
    void feedback();
    bool deviceReady();

signals:
    void processMore();
};

class InputPrivate : public QIODevice
{
    Q_OBJECT
public:
    InputPrivate(QAudioInputPrivate* audio);
    ~InputPrivate();

    qint64 readData( char* data, qint64 len);
    qint64 writeData(const char* data, qint64 len);

    void trigger();
private:
    QAudioInputPrivate *audioDevice;
};

QT_END_NAMESPACE

QT_END_HEADER


#endif
